Zilog EZ80190 - Manual (Page 32)

eZ80190 Development Kit
User Manual
eZ80Acclaim! Development Platform UM014108-0810
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Bits 6 and 7 in Table 9 are the control bits for the user triggers. If either bit
is a 1, the corresponding Trig1 and Trig2 signals are driven High. If either
bit is 0, the corresponding Trig1 and Trig2 signals are driven Low.
Embedded Modem Socket Interface
The eZ80Acclaim! ® Development Platform features a socket for an
optional 56K modem (a modem is not included in the kit). The tested
modem for this eZ80190 Development Kit is a Conexant socket modem,
part number SF56D/SP. Information about this modem and its interface is
available in the SmartSCM SocketModem data sheet (Doc. No. 101522D)
from
www.conexant.com .
Connectors J1, J5, and J9 provide connection capability. The modem
socket interface provided by these three connectors is shown in Figure 9.
Tables 10 through 12 identify the pins for each connector. The embedded
modem utilizes UART1, which is available via the Port C pins.
Figure 8. Trigger Pins J21 and J22
J21
Trig2
J22
Trig1
Ground
Trigger output